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Answer:
Percentage increase in the fundamental frequency is
d)-14.02%
Explanation:
As we know that fundamental frequency of the wave in string is given as
now it is given that tension is increased by 30%
so here we will have
now new value of fundamental frequency is given as
now we have
so here percentage change in the fundamental frequency is given as
% change = 14.02%
Given:
Applied stress,
Critical Resolved Stress,
Solution:
a). According to the question, orientation of tensile load is along [1 1 1],
Now, for resolved shear stress, along [1 0 1] within (1 1 T)
let '' be the angle between [1 1 1] and [1 0 1], then by coordinate formula:
=
=
let '' be the angle between [1 1 1] and [1 1 1], then by coordinate formula:
= 1
Now, for the resolved components along [1 0 1]
=
=
= 0.3673 MPa
b). For required tensile stress to produce :